A matter of frames...
F4-134 4x2 (and earlier 4x2's) frame rails were constructed of hat channel that was boxed in.
F4-134 and L6-226 4x2 & 4x4 (and earlier models) frame rails all appear to be the more familiar "C" channel cross section.
While the hat channel cross sections are dimensionally larger (height & width), they were stamped out of much lighter gauge steel than the "C" cross sections.
The hat channel frame width on the 2wd Wagon is narrower to accomodate the Planar suspension. Also, the overall width of the rear hat channel frame is wider than the 4wd, but frame rail center-to-center dimensions are the same.
Questions for you experts:
1) It appears that the 4x2 L6-226 (and derivatives) had "C" frame rails. Were they constructed of lighter steel than their 4x4 sisters?
2) Were late model Wagon frames essentially the same as early ones? (boy, we haven't even touched crossmembers, have we?); did that hat channel frame survive on 4 banger 4x2 Wagons until the end?
3) Although made of lighter material, I would guess that these frames might be equally strong to, and maybe more rigid than, the "C" channel frames, because they are boxed. Has anyone converted a hat channel frame to 4wd? Why?
(Above)"C" channel frame diagram from the Service Manual - Anyone got a hat channel diagram? - email please!
(Below) Frame specs from Service Manual
